2121101212122 has 24 divisors (see below), whose sum is σ = 4597010726880. Its totient is φ = 706835055240.

The previous prime is 2121101212073. The next prime is 2121101212151. The reversal of 2121101212122 is 2212121011212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2121101212095 and 2121101212104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16491004 + ... + 16619127.

It is an arithmetic number, because the mean of its divisors is an integer number (191542113620).

Almost surely, 2^{2121101212122} is an apocalyptic number.

2121101212122 is an abundant number, since it is smaller than the sum of its proper divisors (2475909514758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121101212122 is a wasteful number, since it uses less digits than its factorization.

2121101212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33113698 (or 33113695 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2121101212122 its reverse (2212121011212), we get a palindrome (4333222223334).

The spelling of 2121101212122 in words is "two trillion, one hundred twenty-one billion, one hundred one million, two hundred twelve thousand, one hundred twenty-two".